IT SONIX CUSTOM DEVELOPMENT GMBH

Author

Joseph H

1 Intoduction

Hello, I’m Joseph from Morocco.

Inspired by Hans Rosling’s TED Talk, I taught myself data scraping, analysis, and visualization.
This non-academic approach has given me a unique perspective, as reflected in my projects—though it also means I may require a thorough onboarding process to align with team standards.

I’m open to starting as an intern, either full-time or part-time. Regarding time zones, I’m in UTC+1, but I’m flexible and can adjust my schedule to accommodate the team’s needs.

Feel free to reach me at joseph.ergo@proton.me, and to visit my website for more projects josephelhaddad.github.io.

This custom report, generated from processing 1.4 TB of public data locally, aims to explore the workforce dynamics of a company—up to 2020.
Essentially, I am doing research on a company that does research.

2 About the project

The project came to life after realizing that web scraping doesn’t allow deep-level filtering—without consuming too much time.The irony is, this project itself took me about a month, but the final RDB contains more data than I could ever scrape.

The raw data was 1.4 TB in size and holds information previously scraped.
Processing was done on my local machine using Python, Polars, and DuckDB, following this workflow:
- Processed raw data into structured Parquet files using Polars.
- Transformed each Parquet file into mini RDBs using Polars.
- Merged all mini RDBs into one using DuckDB.
- Analyzed and filtered data to fit the current project.

Alt text

3 EDA

3.1 information technology and services indestry’s yearly new recruit count

3.2 it sonix custom development gmbh’s workforce status over the years

4 Workforce sample

4.1 Adrien Wehrung

Job title: Softwareentwickler
Socials: https://linkedin.com/in/adrien-wehrung-70096610a | https://linkedin.com/in/a-wehrung

4.1.1 Adrien Wehrung’s working period at it sonix custom development gmbh

4.1.2 Gantt plot of Adrien Wehrung’s experience

4.2 Adrien Wehrung

Job title: Softwareentwickler
Socials: https://linkedin.com/in/a-wehrung | https://linkedin.com/in/adrien-wehrung-70096610a | https://linkedin.com/in/adrienwehrung

4.2.1 Adrien Wehrung’s working period at it sonix custom development gmbh

4.2.2 Gantt plot of Adrien Wehrung’s experience

4.3 Artur Schiefer

Job title: Chief technology officer
Socials: https://linkedin.com/in/artur-schiefer-b7382174

4.3.1 Artur Schiefer’s working period at it sonix custom development gmbh

4.3.2 Gantt plot of Artur Schiefer’s experience

4.4 Bassel Saab

Job title: Software engineer
Socials: https://linkedin.com/in/basselsaab | https://linkedin.com/in/bassel-saab-2833a715

4.4.1 Bassel Saab’s working period at it sonix custom development gmbh

4.4.2 Gantt plot of Bassel Saab’s experience

4.5 Bettina Biel

Job title: Senior usability engineer
Socials: https://linkedin.com/in/bettina-biel-b561457

4.5.1 Bettina Biel’s working period at it sonix custom development gmbh

4.5.2 Gantt plot of Bettina Biel’s experience

4.6 Christian Schmidt-Guetter

Job title: Software-ingenieur
Socials: https://linkedin.com/in/christian-schmidt-guetter-13913a29

4.6.1 Christian Schmidt-Guetter’s working period at it sonix custom development gmbh

4.6.2 Gantt plot of Christian Schmidt-Guetter’s experience

4.7 Christoph Specht

Job title: Projektleiter
Socials: https://linkedin.com/in/christoph-specht-846a6b104

4.7.1 Christoph Specht’s working period at it sonix custom development gmbh

4.7.2 Gantt plot of Christoph Specht’s experience

4.8 Daniel Heinze

Job title: Software developer
Socials: https://linkedin.com/in/daniel-heinze-64238a8b

4.8.1 Daniel Heinze’s working period at it sonix custom development gmbh

4.8.2 Gantt plot of Daniel Heinze’s experience

4.9 David Liebefinke

Job title: Project manager and senior usability engineer
Socials: https://linkedin.com/in/david-liebefinke-08956b185

4.9.1 David Liebefinke’s working period at it sonix custom development gmbh

4.9.2 Gantt plot of David Liebefinke’s experience

4.10 Dominik Wilczynski

Job title: Software engineer
Socials: https://linkedin.com/in/dominikwilczynski

4.10.1 Dominik Wilczynski’s working period at it sonix custom development gmbh

4.10.2 Gantt plot of Dominik Wilczynski’s experience

4.11 Isabel-Teresa Moller

Job title: Junior recruiter
Socials: https://linkedin.com/in/isabel-teresa-moller-37b8b112b

4.11.1 Isabel-Teresa Moller’s working period at it sonix custom development gmbh

4.11.2 Gantt plot of Isabel-Teresa Moller’s experience

4.12 Jan Fleischinger

Job title: Scrum master
Socials: https://linkedin.com/in/jan-fleischinger-576a54114

4.12.1 Jan Fleischinger’s working period at it sonix custom development gmbh

4.12.2 Gantt plot of Jan Fleischinger’s experience

4.13 Johannes Müller

Job title: Softwareentwickler
Socials: https://linkedin.com/in/johannesmueller1983

4.13.1 Johannes Müller’s working period at it sonix custom development gmbh

4.13.2 Gantt plot of Johannes Müller’s experience

4.14 Marcus Katscher

Job title: Scrum master
Socials: https://linkedin.com/in/marcus-katscher-a7766bba

4.14.1 Marcus Katscher’s working period at it sonix custom development gmbh

4.14.2 Gantt plot of Marcus Katscher’s experience

4.15 Mosbah Habbal

Job title: Software engineer
Socials: https://linkedin.com/in/mosbah-habbal-07637899

4.15.1 Mosbah Habbal’s working period at it sonix custom development gmbh

4.15.2 Gantt plot of Mosbah Habbal’s experience

4.16 Robert Suman

Job title: Technical project manager
Socials: https://stackoverflow.com/users/2471535 | https://linkedin.com/in/robert-suman-9514ab9

4.16.1 Robert Suman’s working period at it sonix custom development gmbh

4.16.2 Gantt plot of Robert Suman’s experience

4.17 Ron Gastler

Job title: Softwareingenieur
Socials: https://linkedin.com/in/ron-gastler-56593a106 | https://facebook.com/ron.gastler

4.17.1 Ron Gastler’s working period at it sonix custom development gmbh

4.17.2 Gantt plot of Ron Gastler’s experience

4.18 Simon Harry

Job title: Senior software engineer
Socials: https://linkedin.com/in/simon-harry-5289921a

4.18.1 Simon Harry’s working period at it sonix custom development gmbh

4.18.2 Gantt plot of Simon Harry’s experience

4.19 Suvratha Bejai

Job title: Software developer
Socials: https://linkedin.com/in/suvratha-n-bejai-83015b54

4.19.1 Suvratha Bejai’s working period at it sonix custom development gmbh

4.19.2 Gantt plot of Suvratha Bejai’s experience

4.20 Sünder Christian

Job title: Senior software-ingenieur
Socials: https://linkedin.com/in/sünder-christian-04751b85 | https://linkedin.com/in/sã¼nder-christian-04751b85

4.20.1 Sünder Christian’s working period at it sonix custom development gmbh

4.20.2 Gantt plot of Sünder Christian’s experience

4.21 Ulrike Specht

Job title: Senior recruiter
Socials: https://linkedin.com/in/ulrike-specht | https://linkedin.com/in/ulrike-specht-2a9727a2

4.21.1 Ulrike Specht’s working period at it sonix custom development gmbh

4.21.2 Gantt plot of Ulrike Specht’s experience

4.22 Vincent Wienecke

Job title: Softwareentwickler
Socials: https://linkedin.com/in/vincent-wienecke-33b1b0134